Q: I have a1999 infiniti qx4 v6 . Trouble code p0180 comes up and p0180 pd. I replaced the sending unit. Still won't start.

asked by on April 07, 2017

Code p0180 comes up. Fuel temperature sensor. Replaced it. Car still won't start. Checked connections. Won't start. Turns over.

My car has 202826 miles.
My car has an automatic transmission.

Car is not starting Inspection $94.99 - $114.99 Get a Quote

The trouble code P0180 could be related to the no start condition if the fuel is frozen from extreme cold or if there is water in the fuel. Also, if the fuel gets too hot and vaporizes, that can cause the code to set and will result in no start, as well. Excessive additives in the fuel can cause erratic sensor readings and cause the fuel to boil off at lower temperatures than usual, causing the sensor to malfunction. You should be sure the electrical circuit to and from the temperature sensor does not have any loose or high resistance connections. If the sensor is new, the circuit has been verified (no voltage drops), and there is no issue with fuel temperature or quality (old gas with water, too, perhaps), then manually erase the code and attempt to start the vehicle. If the vehicle still does not start, the fault lies elsewhere.


Be sure there is adequate fuel in the fuel tank and that the fuel is not old. Check for adequate fuel pressure, injector operation, and a spark at the spark plugs. Basically, if the starter motor is turning the engine over rapidly, at sufficient RPM, but the engine does not catch and run, that means that there is an ignition, fuel, air induction, or mechanical fault in the engine that will have to be repaired. Strictly speaking, if there is fresh fuel being delivered by the injectors (not just "to" the injectors) and the ignition system is working, that means that the air fuel ratio of the mixture delivered to the cylinders is so far off that the mixture just won’t ignite. Such could be due to a big vacuum leak, an air induction fault like a stuck idle air control valve or, again considering fuel, could be due to a failed temperature sensor that must be working properly to signal the PCM to enrich the mixture on cold start. Other common faults are defective spark plugs or a defective coil(s). Regardless of the underlying cause, if you request a no start diagnostic the responding certified mechanic will get the problem diagnosed and repaired for you promptly. Please let us know if you have further concerns or questions as we are always here to help you.

The statements expressed above are only for informational purposes and should be independently verified. Please see our terms of service for more details

Get an instant quote for your car

Our certified mechanics come to you ・Backed by 12-month, 12,000-mile guarantee・Fair and transparent pricing


Experienced Mechanic?

Earn up to $70/hr

What others are asking

Plastic key in ignition
Hello, The metal key and plastic housing both need to be intact for the vehicle to start. The plastic housing holds a computer chip which sends a signal to the anti-theft system to start the vehicle. The metal key acts...
Car not going even with gas pedal all the way down
If by "won't go" you mean the car doesn't have any acceleration, then the vehicle could be misfiring to a point of failure. If multiple cylinders are misfiring all at the same motor won't expel enough power to efficiently move...
Car overheating and smoking
Hi there. Engine overheating can cause catastrophic engine damage so I suggest you address this issue as soon as possible. I would start by pressure testing the cooling system. This test uses dedicated equipment to pressurize the system and pinpoint...
Power steering cutting out
Hi, first I would recommend checking the fluid level under the hood and make sure the level is correct. If you are low on fluid, it can create pockets of air, causing a loss in power steering as you turn...
Exhaust sound
The exhaust would need to be inspected to determine the cause of the noise; it could be coming from the muffler, or indicate a problem with piping, or the converter. I recommend that you have a mechanic, such as one...
Brakes are making squeaking noise - 1980 Toyota Cressida
Brake noise or chatter occurs when the brake pad backings vibrate in the pad guides and caliper housing. Often the application of a brake grease or anti-seize lubricant can be applied to the contact point of the brake pad (https://www.yourmechanic.com/services/brake-pads-replacement)...
I have an error code P0441. It is recommended that I replace the purge control valve. Where is this located and how do I replace?
Hi there. The purge control valve on your vehicle should be behind the engine air filter housing. You may have to remove the air filter housing to get to the purge valve. The valve is held on by a couple...
Car won't start. Can't determine if either ISM is bad or hydraulic valve body need to be replaced.
I presume your saying that your car does not crank when you turn the key, because that is the only fault I would expect to be associated with transmission parts controllers.The ISM (intellegent servo module) is responsible for the transmission...
Crankshaft positioning sensor location and easiest way to change
This engine has a crankshaft sensor mounted in the transmission housing at the left rear of the engine.

Related articles

Can a Bad Sensor Prevent a Car From Starting?
If your car isn't starting or has a hard time starting, a faulty sensor may be to blame. Car sensors monitor data to keep your car running smoothly.
A Buyer’s Guide to the 2012 Infiniti QX56
If If you want an SUV that offers comfortable seating for the entire family, a luxuriously smooth, enjoyable ride and the ability to tow all those toys when you go on vacation, the 2012 Infiniti QX56 might be your answer....
P0180 OBD-II Trouble Code: Fuel Temperature Sensor A Circuit Malfunction
Fuel Fuel Temperature Sensor ‘A’ Circuit Malfunction What the P0180 code means P0180 is a generic OBD-II code that is triggered by a malfunctioning fuel temperature sensor 'A.' This could indicate that the sensor is not within specification, or that...